You need to configure the WLAN client utility on a new machine.  Which two of the following are true regarding this utility？ （）

• A、The Aironet Desktop Utility （ADU） can be used to enable or disable the adapter radio and to configure LEAP authentication with dynamic WEP.
• B、In Windows XP environment， a client adapter can only be configured and managed with the Microsoft Configuration Manager.
• C、The Microsoft Wireless Configuration Manager can be configured to display the Aironet System Tray Utility （ASTU） icon in the Windows system tray.
• D、The Cisco Aironet Desktop Utility （ADU） and the Microsoft Wirelss Configuration Manager can both be enabled at the same time to setup WLAN client cards.